Practice Test 1 Flashcards
T/f: In type 2 diabetes the adipocytes of a person may become unable to recognize insulin as a signal for glucose uptake from the blood.
Ture
T/f: Optimal glucose absorption by brain cells requires the presence of insulin
False
What hormone is made by the pineal glad that promotes the sleep phase of our circadian rhythm
Melatonin
T/f: as a second messenger, inositol triphosphate (IP3) causes the opening of calcium channels and results with the contraction of specific smooth muscle cells
True
Which type of hormone affects only the cells adjacent to the one that created it?
Paracrine
If oxytocin and prostaglandin both promote contraction of the uterus at birth. The activities of the two would be ___________ relative to each other
Synergistic
calcium rich kidney stones might be expected to occur in the ______ was hyperactive and caused high blood levels of calcium (hypercalcemia)
Parathyroid glands
T/f: if you produce a large amount of cortisol, you would probably observe an increase in you blood glucose and a reduction in the amount of glycogen in your liver
True
If you had kidney failure and were in need of a transplant and dialysis, which hormone could help make up for chronic anemia?
erythropoietin
T/f: Hyperthyroid activity (excess T3) could easily explain why a person had an anorexic-like appearance and was always warm to the touch.
True
Which hormone promotes growth and other energy demanding reactions in body?
Thyroxine, Insulin, growth hormone
What specific adrenergic receptor causes the heart to beat more forcefully during stressful situations like this test?
Beta 1
When a hormone like epinephrine binds its alpha-1 receptor, a _________ is released inside the target cell that stimulates phospholipase-C to produce inositol triphosphate (IP3).
G-protein
Which hormone relies on an enzyme called tyrosine kinase to regulate the movement of glucose into an adipocyte?
Insulin
Which hormone is produced in an inactive state (pro-hormone) and clipped inside a Beta-cell making it active prior to release into the blood?
Insulin
What may occur because a diabetic cannot produce insulin
Polyuria, Polydipsia, Polyphagia
Which hormone rapidly decreases plasma calcium, especially in infants?
Calcitonin
Thyroxin is stored in the follicles of the thyroid gland in a fluid called _________.
Colloid
T/f: The adrenal medulla produces sex-steroids, glucocorticoids and mineralocorticoids, and the adrenal cortex produces catecholamines like epinephrine and norepinephrine.
False
T/f: Stress stimulates the secretion of adrenocorticotropic hormone (ACTH) which increases the amount of cortisol you produce.
True